Variable-speed elastic-fluid turbine.



G. BELLUZZO. VARIABLE SPEED ELASTIG FLUID TUEBINE.

APPLICATION FILED MAY s, 1906` .Patend Aug. 24. 1909.

:Top-ZZ whom it 1n cry' concern.:

` ber oifwheels which are' acted upon bythe tive s rnall part of the whole periphery of the p running wheels.

l its application 'to ship propulsion.

f Figf? is a section c n the line X X1 X2 (Flin, i).

engineer, subject ofthe King. of ltalyfresiii` -lng at Milan, Italy, haveinvenled certain new and useful Improvements in flariable'f Speed El 'which is intended. for ziglven speed and by lablewith partial ladmission. turbines wherein 'and 90'0 revolutions with a high degree of eciency 35.,

'the various groups of distributingor guide vanes, while U `isthe tube' which collects the wheels a, l), c, d, e,j` 2) mounted on the 'intended for reversingr the motion.

UNrrnn srnfrn nfrnnr oninon,

GIUSEPPE Bernezzo, or MILAN, yi'iALY.

Be it known vthat LGIUsr-:PPE BnLLUzzo,

astic-Fluid Turbines; and l de' hereby declare the following to be a full, clear, andy exact description of the invention, such as will enable others skilled'in the nrt to which it eppertains to ineke and vuse the an almost constant degree of eiliciency. rihe aimisfattained bymean's of various groups4 of stationary 'guide -whee'ls distributed over the periphery of the running wheel-s, each oi' conveniently varying the angles ofthe vanos and the degree lof react-ion as well as the nrnnenergy stored up in the steam o1 otlierelsstic iluid. Such an ann 1s of course only attaint-h'e guide wheels `onlyexteinl toa compara- The invention is specially iniportruit for The drawing shows by. way of example turbine made according to the present invention, which may run at 1900, 1500, 1200 Figure l1 `is a front view ofthe turbine as seen 1n the direction of the arrow W (nig. 2).

T 1everywhere indicates the admission to escape steam from o, 07 0 and leeds to the condenser.. v y

' lThe turblne is supposed to have 6 running` same shaft the distance' between the wheels e and 61,07, and c, c and fbeiiiggieater-then that between the wheels c and 5,1; and c. The wheel g, mountedonthe same shaft On the periphery of the wheels is mounted a number of gr'oups of guide venes or distributing wheels equaling the number of s eeds to be atta-ined under goed conditions o eiheiency. In the case of the figure such 'roups are four in number A,B, C, D (Fig: 1).

he irst group namely A consists of the specification of Leiters Patent.

other between-wheel i) andwhccl c.

vARIABLnfsPEEn nLesTro-FLID ,'IUnnrnr.

Patented Aug. 24, 19.09.

Application mea May s', 190e. sereine. 315,753.

nozzle preceding` the iirst running wheel a' and two other sets ofguidin-r vanes namely one between wheel a, and wheel l), and the The second group namely B includes besides the 'first nozzle4 threedistributingq nf'heels or sets of guiding vane's' namely one betweenc and b, one between l) and c and one between c :uid (l. "ihe thirdgroup nanielyl includes ber' sides the 'first noz/,le 4fourf distributing wheels and so on.

l'ilhenthe-stea1n or other ilnid is let in through the distributing group A, it escapes in the interval between the 3rd running' wheel c and-the 4th running' wheel d and is directed to the condenser by means olf the deviating` wall p (Fig. 2). ln this ease the steam docs not act on the remainder ollv .the running' wlicclsJ which revolve within a space comrminicating 'with the condenser and therefore absorb a very slight power. ln this ease the speed of the turbine corre-V spendingl to the highest degree of e licienc)r will be the greatest. Should on the contrarjir the steam be caused. to enter the group l of distributing wheels the same would escape lin the interval between the 4th wheel (d) and theth one `(c) and the speed correspondingto the highest` degree of ellicicncy would -be somewhat. smaller than in theformer case, the saine decreasingY with the increase of the number el whe-cls which r-un under steam.v

'The ingle teken` up on the periphery of the turbine .by the single groups of distributingI or guide wheels is of course `greater for the guide wheels corresponding to the maximum speed, while it dccreaies with the dextremer;y of the turbine speed from toward l, from B toward C anden on.

The angles oi" inlet and outlet of the ste-ain very of course for the 'runes of the various i'listributing` groups so as to be proportioned to the speed el" the runningr wheels.

The present type of' turbine, besides being adapted for the propulsion of shipsI al'lords p following advantages l. The consumption of steam perfunitI ol power is almost constant for all thespeeds taken lntd consideration'. nor does it nurN terially increase if intermediate speeds are obtained by a slight throttling.

2. The space taken up is a comparatively` verv smell oeefand the same is the case with theu cest ci' onrchase. The same arrangementis also applicable to other elastic iluids besides steam.

I Hayln l thus fully describedmy invention,

what .I c aim as new and ldesire to secure by 1. in an elastic .fluid turbine or thermetion type, aplurality of motive Huid passages of different lengths, va luralityl of guide'' vane' groups .one locate in eachpass'ag'e, a

plurality of concentric -reaction'w -their..v anes located betweenthe members motive. fluid to one en .of a passageyan `0l diilerent 'substantially parallel to the axis'thereo'f, a .plurality of guide-Vane groups one located meansltovde v end of said passage to .the condenser'. 3.` In an'elastic fluid turbine of; the reacj tion type, a plurality ofsegmental motive eels with of the guide-vanegrou4 s," means .to' supply connection between ,the other vendof said passage and the condenser. j f

2. In an elastic fluid turbine of thefreaction type, a plurality of motive fluid passages engths extending' therethrough fluid'. passages of. different len ths and of an -aggregate width to s ubstantia y 'occupy -the periphery of the turbine, a pluralityof guidevane groups one located in eachpassage, a plurality; of concentric reactionfwh'eels; arrangedin tandem with their Vaneslocated between the. members,- of the g'idevane..

-A to one endof 'the. passa'ge`s'7 and. e9nnections between the other end oi' sages'and one vlocatedineach' 'assage, a plura ity? of the condenser".

4. .In an elasticfluidfturbine 'ofv.thefreedtionf-type, a'plurality of segmentalgmotive 'fluid passages o f different lengths, ltheangl'e' subtended by'each, varying inversely with its length, fapluralit'y of guideyane 'rups concentric reaction VW reels with ,their `tralies..

-vlocatedfbetween the membersiof thegguidel `l vane groups-,means to supply elastic motlve iid t0. .one @ed ofthe .penss-Fand, 0011--,

vnectio'ns betweenthe other end ofthel pas-w {Witnesseslf j.

sages'andthe.,condenser:

'spondinpin'number to the speeds" desired; c. @abends ,by aeree fluid.. passages-.ot diterentlengths corre- -running whee aggregate-Wi slang varying inversely with'its' lengthv of guide-vane groups one' located in eac passage, a plurality oi concentric reaction pini-eli Wheels arranged in tandemv upon acommn vshaft with their vanesrevolving between the Y respective members of.- the' guide va 'groi'ips, means to supply steam to oneend the passages, connectionsbetw'ee'n the other end ,o'f the passages land the.condenser,rand means arranged \to deflect the'fluidfrom the discharge end .of eachpassage to .the con denser.

'- .6. In an elasticiluid' turbine, a plurality of reaction 'wheels' 1-'{arrangedin succession,

meansto suppl y the .motive luid'to vthe 4from #between ifferent .whole and to a 'less -"numberof the Wheels to `Vary. the efficient speed of .the turbine and an'. o en discharge. d W eels.

i vraies-asimilar@ turbine, s 'giuralityf y provide'd vvfitlrgg,v plurality ofjmtive fluid pas-.

sages extending' each thi-(negli` ajdiierent number'cfgmheels, and motive iluid supply- `arrangedir'i. succession and 5 ing andwithdrawing means to effect the pas'- sagev of .the fluidthrough aparticular {asfsage'- me' running-Whe' of motive passages .supplyingl'each' a' v 'different nujfrnber of running}wheels to.,pro

duce adiiferent speed; 'the anglesubtended by thediileliellif .Udinlet-paSsageS'increas-i -ingwitli' the'spe'ed they. are to' produce and theangle at the' outletdecreasingwith a 'decrease in the speed.

9. In an v elastic fluid turbine, means `for varying the speed'comprising a plurality of sa 'auger in series, a plurality. ofmo't-ive 'tluidfpiss'ages supplyingeach a dif- 'ferent number ofgrunning wheels to produce spei'the fluid assages of an peripheryof the turbine, the'angle sub-- "tended 4by the different fluid .inlet passages increasing with tlieslpeed they are to produce andthe angle atfthe outlet decreasing with a 4d ecrease in thespeed; 'Intestiniony whereof to. this. lspeciioation',inthe ypresence of two Gi'UsEifPE BELLUzzo- Brasilia-Siemen, ,1

RNEsr SANTI.

me i '.Y..

:Iafiiir signature 

